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Efficient Photocatalytic Degradation of the Persistent PET Fiber‑Based Microplastics over Pt Nanoparticles Decorated N‑Doped TiO_(2) Nanoflowers

查看全文 作　　者：Dawang [1]Zhou;Hongxia [1]Luo;Fangzhou [1]Zhang;Jing [2]Wu;Jianping [1]Yang;Huaping [1,2]Wang 高影响力作者 机构地区：[1]State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,College of Materials Science and Engineering,Donghua University,Shanghai 201620,China;[2]Co‑Innovation Center for Textile Industry,Innovation Center for Textile Science and Technology,Donghua University,Shanghai 201620,China高影响力机构 出　　处：《Advanced Fiber Materials》索引2022年第4卷第5期,共14页高影响力期刊 基　　金：The authors are grateful for financial support from the Fundamental Research Funds for the Central Universities(2232021A-02);Shanghai Committee of Science and Technology,China(No.21ZR1480000);National Natural Science Foundation of China(No.52122312);State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,Donghua University. 摘　　要：Fiber-based microplastics(FMPs)are highly persistent and ubiquitously exist in the wastewater of textile industry and urban sewage.It remains challenging to completely remove such newly emerged organic pollutants by the predominant physical techniques.In this work,we investigated a photocatalytic degradation catalyzed by TiO_(2) catalyst to demonstrate the feasibility of implementing efficient chemical protocol to fast degrading polyethylene terephthalate(PET)-FMPs(a major FMP type existing in environment).The result shows that a hydrothermal pretreatment(180℃/12 h)is necessary to induce the initial rough appearance and molecular weight reduction.With the comprehensive action of the nano-flower shaped N doped-TiO_(2) catalyst(Pt@N-TiO_(2)-1.5%)on the relatively low molecular weight intermediates,an approximate 29%weight loss was induced on the pretreated PET-FMPs,which is about 8 times superior to the untreated sample.This work not only achieves a superior degradation effect of PET-FMPs,but also provides a new inspiration for the proposal of reduction strategies in the field of environmental remediation in the future. 关 键 词：Microplastics Fiber-based microplastics Polyethylene terephthalate Photocatalytic degradation Hydrothermal pretreatment
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